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W. B. TURNER. POWER TRAN$MITTING DEVICE FOR GAR BRAKES.

No'. 474,615. Patented May 10, 1892.

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(No Model.) 2 Sheets-Sheef 2 W. B. TURNER. POWER TRANSMITTING DEVICE FORGAR BRAKES.

No. 474,615. Patented May 10, 1892 M Ma NITED STATES ATENT ,FFICE.

WVILLIAM B. TURNER, OF BOSTON, MASSACHUSETTS, ASSIGN OR TO THETURNER-BEARD AUTOMATIC BRAKE COMPANY, OF NEW YORK, N. Y.

POWER-TRANSMITTING DEVICE FOR CAR=BRAKES.

SPECIFICATION forming part of Letters Patent No. 474,615, dated May 10,1892.

Application filed June 4,1891. Serial No. 395,039. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM B. TURNER, of Boston, county of Suffolk,State of Massachusetts, have invented an Improvement in Devices forTransmitting Power, of which the following description, in connectionwith the accompanying drawings, is a specification, like letters on thedrawings representing like parts.

As a means for braking, retarding, or slowlng down trains a brakemechanism has been provided which is operated'by the inwardlymovingdraw-bars, so that as the brakes are applied to the locomotive theclosing up of the train causes the brakes of the cars to operate.

This invention has for its object to improve the construction of. themeans employed for transmitting the motion from the inwardlymovingdraw-bar to the brake mechanism; and my invention comprehends theemployment of a fixed support having 011 one side of it a block which ismoved longitudinally by the draw-bar either directly or indirectly, anoperating member moved by said block and herein shown as carrying aseries of rollers, and a guide at one side of the said operating memberfor directing its movement.

Figure 1 represents a plan view of a portion of a car-frame, showingadraw-bar and means embodying this invention for transmitting inwardmotion of the draw-bar to the brake mechanism; Fig. 2, a longitudinalsection of the transmitting device shown in Fig. 1; Fig. 3, an underside view of the transmitting de- Vice, and Fig. 4 an end View of theframe or casting which supports the operating parts of the transmittingdevice.

The draw-bar a, the followingplates a a arranged in suitable supportsand separated by springs a and the strap a are all of usualconstruction.

The transmitting device located adjacent to the draw-bar, by which itsinward motion is transmitted to the brake mechanism, (not herein shown,)consists of a suitable supporting-frame A, adapted to be bolted to thebeams B B, the base of the said frame being slotted, as at c, to receivethe movable parts to be described. A block 0, placed on one side of thesupport A and movable longitudinally between guides g g, projects upwardand lies in the path of movement of the draw-bar a, and

a plate 0 is placed on the other side of said support, being pivotallyconnected with the block 0 by a bolt 0 which passes through the slot 0.The plate 0' is located in the guideway 0 one side of which presents astationary guide having an inclined portion f and a straight portion f.A plate d is secured to the under side of the plate 0, it being fittedonto a diagonally arranged projection cl, formed on the under side ofthe said plate 0. The plates 01 and c, separated from each other a shortdistance, each have a slot or elongated opening, which register witheach other and into which are placed, as herein shown, four parallelrolls (1 (see dotted lines, Fig. 3,) and a cap or plate (1 is secured tothe under side of the plate d by a pin (1 which overlaps the ends ofsaid rolls and keeps them in proper position. The plates 0 andclconstitute the operating member. A bell-crank lever is pivoted at e tothe supportingframe A, one arm of the said lever, as a, being connectedby a suitable connectingrod c with any usual or suitable brakemechanism, (not herein shown,) and the other arm, as e being arrangeddiagonally with relation to the path of movement of the operating memberand occupying a position between the plates 0' and d thereof and bearingagainst the end roll of the series of rolls (1 When it is desired toapply the brake mechanism, thebrake on the locomotive will be applied,and as the cars close together the drawbars are pressed inwardly,striking the block 0 and moving it longitudinally or in a direct line,as shown by the arrow, Fig. 2, and said block carries with it theoperating member. As the operating member 0' d is thus carried 0 by thelongitudinally movable block it is caused to move on its pivot by theinclined guide portion f in the direction of the arrow,

Fig. 3, and bearing against the arm 6 of the bell-crank lever turns iton its pivot. When 5 the operating memberhas been carried by the block aa short distance, it will have passed by the inclined portion f and willthen bear against the straight portion f, and as this portion f isparallel to the direction of move- I00 ment of the .block 0 and also tothat side of the arm a which isengaged by the operating member thelatter may be moved farther by said block and have no elfect on thebell-crank lever exceptto hold itin its abnormal position. By this formof guide ff it will be seen that the bell-crank lever will be moved itsfull distance to set the brake on a very short inward movement of thedraw-bar. A spring 0 is provided, one end of which bears against theblock 0 and the other end against a fixed projection on thesupporting-frame A, the said spring serving to restore the block 0 toits normal position.

I do not desire to limit myself to the employment of a bell-crank leveras the only means of transmitting the motion to the brake.

I claim- 1. In a device of the kind described, asupport or frame, as A,a block thereon'movable longitudinally by a draw-bar, an operatingmember connected to said longitudinally-movable block and rollerscarried by it, a guide on the support having an inclined portion f,

, against which the rollers act-,anda bell-crank lever, one arm of whichis engaged or acted upon by said rollers, substantially as described.

2. In a device of the kind described, asupport or frame, as A, ablock othereon movable longitudinally by a draw-bar, an operating memberpivoted to said longitudinally-movable block and rollers carried by it,a stationary guide having an inclined portion f located at one side ofsaid operating member and with which the rollers cooperate, and abell-crank lever, one arm of which is located at the other side of saidoperating member and is acted upon by the rollers, substantially asdescribed.

3. In a device of the kind described, a support or f ram e, as A, ablockc thereon movable longitudinally by a draw-bar, a pivoted operatingmember and rollers carried by it, aguide located at one side of theoperating member, having an inclined portion f and a straight portion f,and a bell-crank lever, one arm of which is located at the other side ofthe said operating member which is acted upon by the rollers,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

\VILLIAM B. TURNER.

Witnesses BERNIOE J. NoYEs, EDWAR F. ALLEN.

